Plumb-bob.



J. PAUL.

PLUMB. BOB.

APPLIOATION FILED MAY 16, 1911.

Patented May 7, 1912 Jo lm Bald @656 fl'oznu;

UNETED STATES PA TENT ()FFICE.

JOHN PAUL, OF CLEVELAND, OHIO.

PLUMB-BOB.

Application filed May 16,

prorements in lluinb-llobs, oi. \Vllit'li the following is :i sperilirzition.

The. invention relatee to .plunib weights, and morev particularly to the (fltlia'h .ot plumb bobs for use by burreyors. rurpenters, nieelninics, wheel-Wrights or the like.

The primary objeetot the in i'e-ntion is the provision of u plumb bob in which the tip thereof is .so mounted that the slime may recoil when meeting an obstrut'tioin' thus preventing the bending thereof or the breaking thereof, as is ordinarily experienced in the use of rigid tips.

Another object of the invention is the provision "bf :1 bob in which the mispension member thereof when not in use is prevented from being snarled or tangled, thus enabling" the bob to be readily and quirkly suspended for use. I

A further object of the. invention is the provision of u, bob in which the weight and size thereof may be readily increased or (ltXileitSetl according to the alternator" of work with which the some is to be employed,

thereby enabling the bob, when reduced in xize-and weight, to he need places. i

A still further objeet. of the invention is theprorision of ii bob .in which the adjunct parts thereof may be readily asSembled and dimissenibled, thus, by reason of the conveuient disassembling thereof, it enables the nereaenry i e 'ifiirs to be made or the.replacing of new parts in lieu of old ones, should the oeeusion require.

gt ill turther object of the invention is the. provision of it bob which is simple in construction, thoroughly reliable and elli- -cient in operation, and inexpensive in manufne to re.

\Vith these and other objects in view, the invention consists in the construction, combination unit rrnug'einent of parts, as will be hereinafter more fully dexiribed, illustrated in the accompanying drztwinge, and

pointed out in the chums; hereunto tippeuded. r

in the drawings: Figure '1 is 2!, side elevelion oi :1 bob untl it; .u. pensio-n means construeteil in urror lznu-e with the intention.

Fi 2 is top plan view thereol' when the Specification of Letters Patent.

in contracted Patented May 7, 1912.

1911. Serial No. 627,404.

suspeneion means wrappedniponthe'bob when not in use. Fig. 3 a vertical longitudinal sectional view through the bob. Fig. -.l is a detail perspet-tive view of the disphu'eable tip or point. Fig. is a detail perspective view of thereniorz ble barrel of the bob; Fig. 6 is u perspective view of the knurled binding eollu r removed from the end of the barrel.

Similar reference characters indicate corresponding parts throughoutthe several views of the drawings.

the bob comprises a body 10. the same being preferably conieal slniped, and is provided with =11 central bore opening; through opposite ends thereof, the bore being formed with stepped diameters ll and i2. respectively, of varying sizes toezieli other. the diameter 11 being formed with screw threads 13, with which engage external screw threads 14 formed on the barrel l5 removably fitted within the bore iii-the body 10, the barrel 15 being ot'cylindrienl shape and hollow, and is provided at one end with aepooldike knob it for a purposev as will be hereinafter more fully described. I

Formed in the wall of the berrel 15 is an elongated slot 17 and working within this barrel is andisplneeable or recoiled point or tip 18, the latter norninlly protruding out-- sideof the body 10 through the contracted end of the central bore therein, point 18 being provided with a reduced stein surrounding {his stem is a-eoiled expansion spring 20, one end of which he's its'bearing upon a shoulder 21 formed' on the stelii 19 oft-he tip or point, the opposite end of the spring 20 being engaged ,with it suitable sent formed in the barrel. 'llngnged in the stenrltlis a guide screw 3'2, the head thereof protrudinginto theslot 17 in the barrel 1:"), thereby preventing the turning of the tip or point 18 but allowing the same. to recoil within the body 10 of the bob. Also this guide serew willlimit the outward and inward movement of the tip or point, when reeoiled within the-body or protruding outside'of the enie.

Formed on the spool-like knob 16 is u Stlil'lt being provided .11 which is. engaged the t aueuension cord 2-6, the .tlkletl through a. suitable I let for being Referring to the drawings by numerals,

the tip or 19 which extends into the barrel. 15, rind.

thus the said screw will'inove in the slot 17,

collar 27, the being provided with a central opening adapted to receive the end of the knob 16, whereby the said collar 27 may be wedged on the knob 16 for holding the sus pension cord 26 and preventing it from un winding, after the latter has been wound upon the barrel l5, and in this manner 0bviating the possibility of the said .cord 26 becoming tangled or snarled when the bob is not in use.

The body 10, at its larger end, and the provided with external knurled surfaces 29 and 30, respectively, so that the said body 10 may be unscrewed from its engagement with the barrel 15, when it is esired to remove the barrel 'from the said body. Thus it will be seen that the bob may be lightened by removing the. body 10 whereupon the barrel 1.5 may be utilized as a plumb bob in contracted places. Also the collar 27 is provided with a knurled external surface 31 which permits the turning thereof for the wedging or unwedging of the same on the knob 16to hold the s'us pension cord wrapped about the barrel, or

When the bob is suspended by the suspension cord 26, and should the tip or point 18 contact wih an obstruction, the said tip move inwardly within the barrel 15, thus obviatinginjury thereto, nor will the device get out of true when in use.

What is claimed is:

l. A bob of the class described, comprising a body having a bore tl'ierethrough, a barrel removably fitted in the bore, suspension means connected with the barrel, and a spring controlled tip carried by thebarrel.

2. A bob of the class described,'comprising a body, a barrel removably fitted there in and having a spool-like knob, a tapered lug formed on the knob, suspension means engaged with the lug, binding means adapted to be wedged upon said knob for holding I the suspension means when wrapped upon the barrel, and a recoiled point carried by the barrel and normally protruding outside of the body.

3. A bob of the class described, comprising a conioal-shaped body, a barrel detachably fitted in the body, a point detachably I connected with the barrel and normally protruded outside of the body, a knob on the barrel, and suspension l the knob and having able with. said knob when said means is wrapped about the barrel.

4. A bob of the class described, comprising a conical-shaped body, a barrel fitted in the body, a point connected with the barrel normally protruded outside of the body, a knob on the barrel, a cord connected with rel for suspending the and a split collar removably engaged with the knob when said cord is wrapped about the barrel. 7

5. A bob of the class described,eoinprising a conical-shaped body, a barrel detachably fitted in the body, a point detachably connected with the barrel and normally protruded outside of the lbarrel for'suspending the same with the body, and spring means acting on the point for holding it in its protruded position.

6.. A bob of the class described, comprising a conical-shaped body, a barrel detachably fitted in the body, a point detachably connected with the barrel and normally pr0 truded outside of the body, with the barrel for suspending the same spring means acting on the with the body, point for holding it in its protruded p0 means connected.

sition, and a clamping collar carried by the barrel for engagement with the suspension means when Wrapped upon the barrel.

In testimony whereof I aflix my signature in presence of two witnesses.

g JOHN PAUL. I Witnesses: i

H. M. STOWE, I JAMES D. CANTILLON. 

